Inertial ADC Suits High-Temperature Environments

ETL Inertial Aerosystems has introduced a high-temperature 12-bit analogue-to-digital converter from Honeywell for use in applications such as deep-drilling operations and jet engine control systems. The HTADC 12 is designed to enable reliable measurement and control in high-temperature environments. The technology is claimed to offer four times better resolution than competitive offerings.

This device is a monolithic, 12-bit, 100,000 samples per second converter. The product can sustain reliable 225C operation for up to five years and 300C for one year. The input of the HTADC 12 allows interfacing to sensors for data-conversion applications. The direct input supports 0V to 2.5V signals and includes an on-chip buffer to allow for full 5V input signals.

The outputs are 12-bit parallel, two 8-bit parallel and serial. The switched capacitor charge redistribution DAC architecture does not require a sample and hold input stage. It is applicable for both multiplexed systems that switch full-scale voltage levels in successive channels and for sampling single channel inputs at frequencies up to and beyond the Nquist rate.

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